Re: lanuchd questions
Re: lanuchd questions
- Subject: Re: lanuchd questions
- From: Jason Coco <email@hidden>
- Date: Tue, 21 Oct 2008 08:34:41 -0400
On Oct 21, 2008, at 07:24 , Karan, Cem (Civ, ARL/CISD) wrote:
On Monday, October 20, 2008 4:43 PM Jason Coco wrote:
On Oct 20, 2008, at 16:34 , Karan, Cem (Civ, ARL/CISD) wrote:
Truthfully, I'd rather petition Apple to make it a part of
launchd.
The
moment we have dependencies, then we have to worry about cycles
(deadlock), deciding what to do if a process that we're
dependent on
goes down, etc. And, now that I'm thinking about it, there
is another
cheesy method to handle the problem. Write a script that launchd
launches that runs your first program. When that program
returns, the
script submits the other programs to launchd via 'launchctl submit'.
Since we haven't put anything into /Library/LaunchDaemons
or the other
launchd places, we get the same effect as using /var/run, so
everything is always launched in the correct order each time we
reboot.
That's kinda what I did... I ended up writing a daemon which
was connected to launchd, starts up and does all the
initialization stuff. It then actually manages some of the
other processes and they all communicate over a unix socket.
Do you mean you call daemon() or fork() with exit()?
No, it's a proper launchd daemon. It communicates via its unix domain
socket and is pretty much on-demand for that. However, it
manages 2 other daemons as well so if they're set to launch-on-start
it starts and launches and monitors them.Attachment:
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